Police investigate the scene of a shooting incident outside the McDonald's at 501 Bay St. Monday afternoon.Staten Island Advance/John Annese

Police swarmed the McDonald's at 501 Bay St. about 1:20 p.m., after confirming a report of shots fired at the fast-food outlet. No one was hit in the seven-bullet fusillade, an NYPD spokeswoman said.

An employee, who did not give her name, told the Advance that the incident may have involved someone shooting at a car that had pulled up at the drive-through window.

Police cordoned off the restaurant with yellow tape as detectives sifted the chain of events.

Pirinam Talake, who works at the Majolie Princess Beauty Center across the street, said she heard three pops and then saw people running toward McDonald's.

"We just heard the gunshots. ... It was scary," said Ms. Talake, adding, " After that, I saw running. It was loud, very loud."

Investigators placed multiple cups at the crime scene, a practice by which they designate where spent shells were recovered.

As of Monday night, police had not made any arrests, and the NYPD spokeswoman could not provide a description of the perpetrator.

The North Shore has seen at least one shooting every weekend for the last six weeks, with the latest leaving one person wounded on North Burgher Avenue in West Brighton, not far from Richmond Terrace, Saturday morning.

The borough has seen 40 shootings, with 43 victims total, through Dec. 15 this year. That's on par with last year, which saw 40 shootings with 47 victims in the same time period. Twenty-eight took place in the 120th Precinct, which covers the eastern half of the North Shore, while another 10 took place in the 121st Precinct, which covers the western half of the North Shore, and an area as far south as the Staten Island Mall. The remaining two took place in the Mid-Island's 122nd Precinct.

Eight of those shootings took place over a single 28-day period, ending on Dec. 15.